Best 20-inch Mountain Bikes for Kids

We have compiled the list of our favorite 20-inch mountain bikes for kids. Are you hoping to get your kid a bike they can take out on the trails this year? The 20-inch bikes on our list might be a great fit for your 5, 6, 7 or 8-year-old rider.
Bike fit is an essential aspect of choosing the right bike. Look for a frame with a stand-over height that will allow your kid to stand astride the bike with both feet flat on the ground, for optimal comfort and safety. To determine the stand-over height, find your rider’s inseam measurement by measuring the length of the leg on the inside from crotch to ankle.

20-inch wheels give young riders plenty of control and nimble turning, but without being too small to roll over rocks and roots on the trail. Luckily, there are many good 20” wheel kids’ bikes to choose from. Check out Ten Things to Know Before You Buy a Kid’s Mountain Bike
Here is an overview of our top 20-inch wheel bikes for 5, 6, 7 or 8 year old kids. Check out the comparison table at the end of the article to see all the size, cost and other data in one place.

Prevelo Zulu Three
If you’re looking for high-performance mountain bike features on a 20-inch wheel size package, the Zulu Three is a great option. Each component is the real deal and has been carefully chosen to provide the best performance and fit for young riders ready to tear up the trails. Firstly, low and narrow Prevelo geometry keeps the rider low, balanced, and in control. Secondly, Tektro front and rear hydraulic disc brakes make speed control and stopping easy. Thirdly, the specially designed Shimano ZEE 10-speed drivetrain and derailleur. Importantly, this amazing component features a clutch that can be turned on with the flip of a switch to eliminate derailleur bounce over hard terrain and reduce chain drops. This bike is one of the best 20-inch mountain bikes for kids 5-8 years old!
Buy this kids’ mountain bike from:
Stand-over Height | 21.5 inches |
Drivetrain | 1 x 10 |
Frame Material | 99M Series heat treated aluminum alloy custom formed |
Brakes | Hydraulic |
Claimed Weight | 22.2 pounds |
Fork | Spinner 300 20 AIR - 80mm travel |
Shifter | SRAM GX Trigger |

Cleary Owl 20 3-Speed
Watch your kid’s confidence and coordination improve as they master gears with the Cleary Bikes Owl 20in 3 Speed Kids’ Bike. Cleary designs bikes that have lots of features to love. First, the Owl frame and fork are lightweight and built to withstand anything your kid can dish out. Second, the geometry is optimized to ideally respond to steering inputs while remaining stable. Third, there are only three gears, so it isn’t overwhelming. The Cleary Bikes Owl best fits young adventurers with an inseam measurement between 19 and 23in. In conclusion, the lightweight construction and reliable components create a bike that’s ready to guide your little shredder around the neighborhood and on the trails.
Above all, Cleary designs bikes for kids of every size and ability to ride safely and comfortably. Note: steel is strong and tough. Cleary bikes have no rider weight limit and are able to survive anything your kids can dish out. This bike is also available in a 3-speed model.
Buy this kids’ mountain bike from:
Stand-over Height | 19.3 inches |
Drivetrain | 3-speed |
Frame Material | Steel |
Brakes | Tektro V-Brakes |
Claimed Weight | 19 lbs |
Fork | none |
Shifter | 3-Speed Sturmey Archer |

Co-op Cycles REV 20 6-Speed Plus Kids’ Bike
Keeping it light, simple, and stable, the Co-op Cycles REV 20 6-speed bike has plus-size tires and disc brakes to give kids the traction, stopping power, and confidence to learn the joys of singletrack. The 6061 aluminum frame is light, strong, and easy to manage. The 6-speed drivetrain is controlled with a single, intuitively easy-to-use Shimano Revo twist shifter; a flick of the wrist changes gears for easy pedaling. Mechanical disc brakes provide quick response and sure-stopping power. Extra-wide, 2.6 in. all-terrain tires soften the little bumps and stick to the trail for a smooth, stable ride.
Buy this kids’ mountain bike from:
Stand-over Height | 18 inches |
Drivetrain | 1 x 10 |
Frame Material | 6061Aluminum Alloy |
Brakes | Mechanical Disc Brakes |
Claimed Weight | 23 lbs. 15.8 oz. |
Fork | Rigid |
Shifter | Shimano Tourney Revo Twist |

Trailcraft Blue Sky 20 Mountain Bike
The Blue Sky 20 is a 20″ bike from Trailcraft has super light components. This bike includes a TC30 carbon fiber suspension fork, Superlight wheels, and alloy spindle direct mount cranks. The Blue Sky 20 is one of the only in the category which takes a water bottle. This is a fun, playful bike for all types of mountain bike riding. Race it, take it to parks, or just have an awesome bike to trail ride with your family. Next-level big-kid performance is achieved with high-quality top-shelf level components and category-leading bike weights. The Blue Sky is one of the lightest 20-inch mountain bikes for kids.
Buy this kids’ mountain bike from:
Stand-over Height | 20 inches |
Drivetrain | 1 x 11 |
Frame Material | 7005 Aluminum/Alloy |
Brakes | Shimano Deore Hydraulic |
Claimed Weight | 20.2 pounds tubeless |
Fork | TC30 air sprung suspension 80mm fork |
Shifter | Shimano Deore 4100 |

Woom OFF 4
The Woom OFF 4 gives children aged six years and older a super light and durable mountain bike for their first go on the pump track and easy cruising through forests and fields. The kink in the top tube makes it easy to get on and off quickly in any situation, thereby giving kids greater safety out and about on the trails. The perfect introduction to mountain biking. The Woom OFF 4 has 9 speeds easily accessed with a SRAM trigger shifter. This bike only weighs 17 pounds! The Woom OFF 4 is a great fit for kids 6 – 8 years old who are 46″ – 51″ inches tall.
Buy this kids’ mountain bike from:
Stand-over Height | 19.5 inches |
Drivetrain | 1 x 9 |
Frame Material | Aluminum/Alloy |
Brakes | Hydraulic disc brakes from Promax |
Claimed Weight | 17.2 lbs |
Fork | rigid |
Shifter | SRAM X5 Trigger |

Specialized Jett 20in Bike – Kids’
Designed around adjustability to grow with our little ones, we know our kiddos will be all over their Jett 20in Bike for multiple summers of pedaling around the lake and skidding around the driveway. Specialized designed this version of the Jett for children ranging from 7 to 10 years of age, and with adjustable handlebar reach, seat-post length, and crankarm length, it just might last your aspiring cyclist all three of those years. Every component on this bike from the saddle, to the short-reach brake levers, and narrow-diameter grips were developed using information from the Retül research group to perfectly function with smaller bodies, limbs, and hands. This all-arounder features a lightweight component set designed to enhance the maneuverability of the bike for lighter kids. The nylon pedals are included and they have reflectors for improved safety around town.
Buy this kids’ full suspension bike from:
Saddle Height | 22 inches |
Drivetrain | 1 x 10 |
Frame Material | A1 Premium Butted Alloy |
Brakes | V-Brake |
Claimed Weight | ? |
Fork | rigid |
Shock | rigid |
Shifter | microSHIFT TS39, 7-speed |

Marin San Quentin 20-inch kids’ mountain bike
The Marin San Quentin 20″ Bike is a lightweight and durable mountain bike. It has modern trail geometry with a slack front end and a balanced rider position. The 6061 aluminum frame comes with disc brakes, 80mm of travel on the front, wide tire clearance for up to 2.6″ tires, and a 1x-specific setup. The 20″ version of the Marin San Quentin comes with a Shimano Altus 8-speed drivetrain. This includes a wide-range 11-32T gear range that makes climbing and pedaling through rough terrain a breeze. Tektro hydraulic disc brakes provide reliable stopping power in various conditions. With the Marin double-wall alloy rims paired with Vee Tire Crown Gem tires, your young rider will have exceptional traction anywhere they go.
Buy this kids’ mountain bike from:
Stand-over Height | 21 inches |
Drivetrain | 1 x 8 |
Frame Material | Aluminum/Alloy |
Brakes | Hydraulic |
Claimed Weight | |
Fork | SR Suntour 80mm travel |
Shifter | Shimano Altus Shifter |

Norco Fluid FS 2.1 20-inch mountain bike
The Norco Fluid FS 2.1 Bike was designed with a lower standover height allowing smaller riders to be comfortable getting on and off the saddle. It has a lightweight aluminum frame and has 120mm of travel on the front suspension and 100mm of travel on the rear. The 2.1 version of the Norco Fluid FS comes with a SRAM GX 10-speed drivetrain. The gearing is perfect for climbing and all-day adventures with an 11-36T cassette on the rear. Shimano BR-MT500 hydraulic disc brakes provide highly reliable stopping power so your young rider can stop with confidence. Sun Ringle Duroc 30 Kids rims are paired with Vee Rubber Crown Gem tires. The rims can be set up tubeless with the right tires so you can ditch the tubes for a smoother ride, better traction, and fewer flats.
Buy this kids’ mountain bike from:
Stand-over Height | 19.7 inches |
Drivetrain | 1 x 10 |
Frame Material | Aluminum/Alloy |
Brakes | hydraulic disc |
Claimed Weight | ? |
Fork | Manitou J-Unit 20 |
Shifter | SRAM GX trigger |

Spawn Yama Jama 20
The Yama Jama 20″ raises the bar for kids’ trail bikes. The 6061-T6 alloy frame includes an internal routing option for dropper posts. The Brood Bike Co. Eldorado fork provides 80mm of plush, nearly stiction-free travel. The drivetrain utilizes a SRAM GX derailleur and shifter combo and an 11-36T 10 speed SRAM cassette. Stopping is handled by powerful Tektro Auriga hydraulic disc brakes. The Yama Jama uses Brood Bike Co. tubeless-ready rims with a wide profile and tops it off with the amazing Brood Maxtion foldable, tubeless-ready tire.
Buy this kids’ mountain bike from:
Stand-over Height | 21 inches |
Drivetrain | 1 x 10 |
Frame Material | 6061 aluminum alloy |
Brakes | Tektro M285, hydraulic disc |
Claimed Weight | ? |
Fork | Brood ElDorado 80mm |
Shifter | SRAM GX |
Comparison chart: Best 20-inch wheel mountain bikes for kids (5-8 years old)
StandoverHeight | Drivetrain | Frame | Brakes | ClaimedWeight | Fork | Shifter | Shock | |
Prevelo Zulu Three | 21.5 inches | 1 x 10 | 99M Series heat treated aluminum alloy custom formed | Hydraulic disc brakes | 22.2 lbs | Spinner 300 20 AIR - 80mm travel- 80mm travel | SRAM GX Trigger | none |
Cleary Owl 20 3-Speed | 19.3 inches | 1 x 3 | Steel | V Hand | 19 lbs | rigid | 3-Speed Sturmey Archer | none |
Co-op Cycles REV 20 6-Speed Plus | 18 inches | 1 x 10 | 6061 Aluminum Alloy | Mechanical disc brakes | 23 lbs. 15.8 oz | rigid | Shimano Tourney Revo Twist | none |
Trailcraft Blue Sky 20 | 20 inches | 1 x 11 | 7005 Aluminum Alloy | Shimano Deore Hydraulic | 20.2 lbs | TC30 air sprung suspension 80mm fork | Shimano Deore 4100 | none |
Woom 4 | 19.5 inches | 1 x 8 | Aluminum Alloy | V Hand | 17.9 lbs | rigid | SRAM X4 Twist | none |
Specialized Jett 20 | 22 inches | 1 x 10 | 6061Aluminum Alloy | V hand | ? | rigid | microSHIFT TS39 | none |
Cannondale Trail 20 | 20.5 inches | 1 x 7 | 6061 Aluminum Alloy | V Hand | 24 lbs | rigid | Shimano Tourney Revo Twist | none |
Rossignol Mandate Jr 20 | 22 inches | 1 x 9 | 6061 Aluminum Alloy | Tektro M285, hydraulic disc | ? | SR Suntour XCR Air, 80 mm | Shimano Alivio M3100 | SR Suntour Raidon R |
Spawn Yama Jama | 21 inches | 1 x 10 | 6061 Aluminum Alloy | Tektro M285, hydraulic disc | ? | BROOD ELDORADO, 80mm | SRAM Dx | none |